A narrow groove large-diameter pipe welding joint butt joint device

Abstract

The utility model relates to pipeline welding opening butt joint technical field, a kind of narrow groove large-diameter pipeline welding opening butt joint device, including support frame, further include: fixed in the inclined brace of support frame surface, support frame is supported by side by inclined brace, the utility model is provided with sliding mechanism, so it has folding function, in transport link, the volume of folded device is greatly reduced, the space occupied when storage also significantly reduces, effectively solve the problem of large floor area of traditional equipment, simultaneously, the device need not like the past as before to carry out tedious installation work before use, staff can put it into use by unfolding fixed, this not only greatly reduces the labor intensity of staff, reduces unnecessary workload, can also significantly improve the speed of work progress, make it more possess in small groove to large-diameter pipeline welding use environment, improve the practicability of equipment, and then effectively increase overall work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of pipe weld joint technology, specifically a pipe weld joint joint device with a narrow groove and a large diameter. Background Technology

[0002] With the advancement of municipal engineering technology, pipeline construction between cities is becoming increasingly common. As a result, the construction site is often small after pipeline excavation, making it difficult to weld the pipeline joints after laying. Currently, there are two solutions for pipeline joint welding: one is to move the pipeline slowly by hand on site. However, due to the large weight of large-diameter pipelines, the thickness of the sand cushion layer at the bottom of the pipe varies. At the same time, manual efficiency is too low, and the safety of personnel in narrow trenches cannot be guaranteed.

[0003] Currently, existing fixed weld joint support devices have significant shortcomings. They occupy too much space, which makes them extremely inconvenient to transport and deploy. This causes many problems, both in terms of the space occupied in storage and the space arrangement during transportation. Furthermore, the device must be installed before it can be used, which undoubtedly increases the workload of staff, consumes a lot of manpower and time, and directly leads to a significant reduction in work efficiency, making it difficult to meet the needs of efficient operation. Utility Model Content

[0004] The purpose of this invention is to provide a welding joint device for large-diameter pipes in narrow grooves, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a welding joint device for large-diameter pipes in narrow grooves, comprising a support frame, characterized in that it further comprises: a diagonal brace fixed to the surface of the support frame, which provides lateral support to the support frame; a serrated annular mover engaged with the surface of the support frame; a manual hoist connected to the surface of the serrated annular mover; a lifting strap provided on the surface of the manual hoist; bottom supports fixed to both sides of the surface of the support frame; a sliding mechanism provided on the surface of the support frame; a base provided on the inner wall of the bottom support; a rotating shaft rotatably connected to the bottom support within the inner cavity of the bottom support; a limit mechanism provided on the surface of the bottom support; and a pin provided within the inner cavity of the sliding mechanism, which penetrates the slider and inserts into the support frame.

[0006] Preferably, the sliding mechanism includes a sliding groove disposed in the inner cavity of the support frame, a slider sliding in the inner cavity of the sliding groove, an inclined rod rotating on the surface of the slider, and the other end of the inclined rod rotating at one end of the base.

[0007] Preferably, the limiting mechanism includes a first limiting block fixed to both sides of the bottom support surface, a second limiting block sliding on both sides of the bottom support inner cavity, a spring fixed in the bottom support inner cavity, and the other end of the spring fixed to the surface of the second limiting block.

[0008] Preferably, the slider is T-shaped.

[0009] Preferably, a rope is fixed to the surface of the support frame, and the other end of the rope is fixed to one end of a pin.

[0010] Preferably, the spring is made of austenitic stainless steel.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention incorporates a sliding mechanism, enabling it to fold. During transportation, the folded device significantly reduces its size, and its storage space is also greatly reduced, effectively solving the problem of large footprint of traditional equipment. Furthermore, unlike previous methods, this device eliminates the need for cumbersome installation before use. Workers can simply unfold and secure it for operation, greatly reducing labor intensity and unnecessary workload, while also significantly increasing work speed. This makes it more suitable for welding large-diameter pipes in narrow trenches, improving the equipment's practicality and ultimately enhancing overall work efficiency. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a partial cross-sectional three-dimensional structural diagram of the present invention; Figure 3 This utility model Figure 2 Enlarged view of point A in the middle; Figure 4 This is a partial cross-sectional three-dimensional structural diagram of the present invention.

[0013] In the diagram: 1. Support frame; 2. Diagonal brace; 3. Manual hoist; 4. Lifting sling; 5. Base support; 6. Sawtooth ring mover; 7. Sliding mechanism; 71. Sliding groove; 72. Slider; 73. Diagonal bar; 8. Base; 9. Rotating shaft; 10. Limiting mechanism; 101. First limiting block; 102. Second limiting block; 103. Spring; 11. Rope; 12. Pin. Detailed Implementation

[0014] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0015] Please see Figure 1-4 As shown, a welding device for large-diameter pipes in narrow grooves includes a support frame 1. Diagonal braces 2 are fixed to both sides of the support frame 1, providing lateral support. A serrated annular mover 6 engages with the surface of the support frame 1, allowing planar movement of the pipe without moving the device. A manual hoist 3 is connected to the surface of the serrated annular mover 6, enabling vertical adjustment of the pipe. A lifting strap 4 is provided on the surface of the manual hoist 3; the flexible lifting strap 4 allows for closer contact with the pipe's outer wall during pipe fixing. Base supports 5 are fixed to both sides of the support frame 1, providing vertical balance support for the device. The support frame 1 is provided with a sliding mechanism 7 on its surface, and the base 8 is provided on the inner wall of the bottom support 5. The sliding mechanism 7 includes a sliding groove 71 provided in the inner cavity of the support frame 1. A slider 72 slides in the inner cavity of the sliding groove 71. A diagonal rod 73 rotates on the surface of the slider 72. The other end of the diagonal rod 73 rotates to one end of the base 8. After use, the base 8 needs to be retracted to release the fixation of the slider 72, so that the slider 72 can slide in the inner wall of the sliding groove 71. The diagonal rod 73 rotates in the inner wall of the slider 72 to make it vertical, and one end of the base 8 is pulled up to the end connected to the diagonal rod 73. Finally, the diagonal rod 73 and the base 8 are in the storage state, which reduces the space occupied and makes it easy to store without disassembly after use.

[0016] The inner cavity of the base support 5 is rotatably connected to a rotating shaft 9. A limiting mechanism 10 is provided on the surface of the base support 5. The limiting mechanism 10 includes first limiting blocks 101 fixed to both sides of the surface of the base support 5, and second limiting blocks 102 sliding on both sides of the inner cavity of the base support 5. A spring 103 is fixed within the inner cavity of the base support 5. The spring 103 is made of austenitic stainless steel, providing protection in complex construction environments. It is more resistant to corrosion and fatigue, greatly increasing its service life. The other end of the spring 103 is fixed to the surface of the second limiting block 102. After the base 8 is unfolded, the first limiting block 101 provides a limiting force to the base 8. The first limiting block 102 prevents the base 8 from rotating upward due to external force at the rotating shaft 9, maintaining the balance of the base 8. At the same time, as the base 8 unfolds, the second limiting block 102, which is blocked by it, can be pushed out under the action of the spring 103, thereby limiting the upper part of the base 8 and preventing the base 8 from rotating downward due to external force, maintaining the balance of the base 8. When the base 8 is retracted, the second limiting block 102 can be retracted simply by pushing the second limiting block 102 into the base support 5. Under the combined action of the second limiting block 102 and the first limiting block 101, the base 8 can remain stable in uneven working environments and will not tilt.

[0017] The sliding mechanism 7 has a pin 12 inside its cavity, and the slider 72 is T-shaped, which also provides a limiting function during sliding. This prevents it from sliding out of the sliding groove 71. A rope 11 is fixed to the surface of the support frame 1, and the other end of the rope 11 is fixed to one end of the pin 12 to connect the pin 12 and prevent it from suddenly falling off during construction and being lost.

[0018] Working principle: When support is needed for pipe welding, the operator simply releases the slider 72, allowing it to slide on the surface of the sliding groove 71 until it reaches the bottom. The pin 12 is then inserted into the slider 72 to fix it in place, ensuring it won't slip during operation. Simultaneously, the inclined rod 73 rotates via its connected shaft while the slider 72 is fixed, unfolding the base 8. During this unfolding, the second limiting block 102, which is restricted by the base 8, is pushed out by the spring 103 and positioned above the base 8, providing a limit. To prevent uneven working conditions, the first limiting block 101 and the second limiting block 102 restrict the unfolded base. The 8-degree angle of movement ensures that the device will not tilt or collapse due to swaying during hoisting. After hoisting is completed, the second limit block 102 is pushed inward and the pin 12 is pulled out to release the restriction. The base 8 is then lifted, and under the action of external force, the base 8 begins to rotate around the axis connected to the base support 5. The inclined rod 73 also rotates accordingly, which in turn pushes the slider 72 upward. Finally, the base 8 and the inclined rod 73 are retracted and kept in the stored state. Due to its lightweight and simple design, it is more suitable for welding large-diameter pipes in small trenches, which greatly increases the practicality of the equipment, reduces the workload caused by disassembly, and reduces the storage space required, making it easy to move and widely applicable.

[0019] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any indirect modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A welding joint device for large-diameter pipes in narrow grooves, comprising a support frame (1), characterized in that, Also includes: An inclined brace (2) is fixed to the surface of the support frame (1). The inclined brace (2) provides side support to the support frame (1). A sawtooth ring mover (6) is engaged on the surface of the support frame (1). A manual hoist (3) is connected to the surface of the sawtooth ring mover (6). A lifting strap (4) is provided on the surface of the manual hoist (3). Bottom supports (5) are fixed on both sides of the surface of the support frame (1). A sliding mechanism (7) is provided on the surface of the support frame (1). A base (8) is provided on the inner wall of the bottom support (5). A rotating shaft (9) is rotatably connected to the bottom support (5) in the inner cavity of the bottom support (5). A limit mechanism (10) is provided on the surface of the bottom support (5). A pin (12) is provided in the inner cavity of the sliding mechanism (7). The pin (12) passes through the slider (72) and is inserted into the support frame (1).

2. The welding joint device for large-diameter pipes in narrow grooves according to claim 1, characterized in that: The sliding mechanism (7) includes a sliding groove (71) disposed in the inner cavity of the support frame (1), a slider (72) sliding in the inner cavity of the sliding groove (71), a slant rod (73) rotating on the surface of the slider (72), and the other end of the slant rod (73) rotating at one end of the base (8).

3. The welding joint device for large-diameter pipes in narrow grooves according to claim 1, characterized in that: The limiting mechanism (10) includes a first limiting block (101) fixed on both sides of the surface of the bottom support (5), a second limiting block (102) sliding on both sides of the inner cavity of the bottom support (5), a spring (103) fixed in the inner cavity of the bottom support (5), and the other end of the spring (103) fixed to the surface of the second limiting block (102).

4. The welding joint device for large-diameter pipes in narrow grooves according to claim 2, characterized in that: The slider (72) is T-shaped.

5. The welding joint device for large-diameter pipes in narrow grooves according to claim 1, characterized in that: A rope (11) is fixed to the surface of the support frame (1), and the other end of the rope (11) is fixed to one end of the pin (12).

6. The welding joint device for large-diameter pipes in narrow grooves according to claim 3, characterized in that: The spring (103) is made of austenitic stainless steel.

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